Event between (450265) 03WU172 and star UC4-587-031825 with event index number of 125035
Geocentric closest approach at 2017/04/27 09:56:04 UTC
J2000 position of star is 06:36:20.7 +27:15:52
Equinox of date position of star is 06:37:23.7 +27:14:59
Stellar brightness R=13.3
Star is 49 degrees from the moon.
Moon is 1% illuminated.
TNO apparent brightness V=21.5
TNO is 29.3 AU from the Sun
and 29.8 AU from the Earth.
The TNO is moving 20.2
km/sec on the sky relative to the star, or,
3.4 arcsec/hr.
The 1-sigma error in the time of the event is 147 seconds.
The 1-sigma cross-track error in the shadow position is
1279 km.
The TNO has an absolute magnitude Hv=6.6
Diameter=288.4 km assuming a 5% albedo -- 16.4 sec chord
Diameter=117.7 km assuming a 30% albedo -- 6.7 sec chord
Dynamical classification is 3:2E
Star training set for 450265, (2017/04/27 09:56UT) Object RA Dec mag sep mel Pollux 07:46:22.4 +27:58:59 1.1 15.28 64 Alhena 06:38:42.7 +16:22:59 1.9 10.87 49 49 Aur 06:36:17.5 +28:00:26 5.0 0.80 49 PPM 096294 06:39:40.3 +26:53:20 8.3 0.62 49 PPM 096204 06:35:50.8 +27:01:54 9.1 0.41 48 PPM 096247 06:37:47.0 +27:14:52 11.9 0.08 49 450265 06:37:25.7 +27:14:57 13.3 49 Positions are for equinox of date
Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.
Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.
Star training set for 450265, (2017/04/27 09:56UT) Object RA Dec mag sep mel Pollux 07:45:18.2 +28:01:33 1.1 15.28 64 Alhena 06:37:42.8 +16:23:57 1.9 10.87 49 49 Aur 06:35:12.1 +28:01:20 5.0 0.80 49 PPM 096294 06:38:35.5 +26:54:19 8.3 0.62 49 PPM 096204 06:34:45.9 +27:02:47 9.1 0.41 48 PPM 096247 06:36:42.0 +27:15:48 11.9 0.08 49 450265 06:36:20.7 +27:15:52 13.3 49 Positions are for J2000
Event circumstances last updated at 2016/10/07 18:06:50 UT
Marc W. Buie, Southwest Research Institute